Home / 126,740.90-190,111.35-80,200.10

Finding the Fourth Proportional to 126,740.90, 190,111.35 and 80,200.10

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Solution

The fourth proportional to 126,740.90, 190,111.35 and 80,200.10 is: 120,300.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,740.90 : 190,111.35 = 80,200.10 : x
  2. Step 2: Convert to fraction form
    126,740.90/190,111.35 = 80,200.10/x
  3. Step 3: Cross multiply
    126,740.90x = 190,111.35 × 80,200.10
  4. Step 4: Simplify right side
    126,740.90x = 15,246,949,281.14
  5. Step 5: Solve for x
    x = 15,246,949,281.14/126,740.90
  6. Step 6: Final answer
    x = 120,300.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.